Помогите разобраться! continuous grain boundary ... и так далее met.

[Марья-переводчица]

Помогите это все перевести:
If the micro-structure shows evidence of continuous grain boundary networks of aluminium-magnesium precipitate in excess of the approved reference photomicrographs, the batch is either to be rejected or tested for exfoliation corrosion resistance and intergranular corrosion resistance subject to the agreement of the Surveyor.